海涂围垦区降渍脱盐的试验研究

Experiments on Water-logging Control and Desalinization Conducted in Areas of Foreshore Reclaimed Land

针对五四农场新围垦区存在的渍害问题，进行了两年的田间试验。结果表明，控制内河水位，实施暗管排水具有明显的降渍脱盐，增产效果，将大麦受渍时间缩短为３天，１ｍ土体含盐量由试验前的０．２３５％降到０．１５％以下，大麦增产２０％以上。

In order to solve the water-logging problem of foreshore reclaimed land in wusi Farm, Shanghai, 2-years' field experiments were conducted. Results show that measures such as the control of water level in outlet channels and drainage by underground pipes have been very effective in water-loging control, desalinization and yield increase. The duration of water -logging for barley has been shortened to 3days. Soil salinity in 1.0 metre soil depth dropped to below 0. 15% from that of 0. 235% before the experiments. Yield of barley increased by over 20%.